Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Dukes County, Massachusetts, has about 21,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Dukes County is held at the county jail, run by the Jail, Regional Lock-Up & House of Correction - DUKES COUNTY SHERIFF'S OFFICE, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Dukes County public records, Dukes County arrest records, Dukes County warrants, Dukes County criminal records, Dukes County court records, Massachusetts arrest records and Massachusetts inmate search.
Finding Someone in Custody in Dukes County
The county jail, run by the Jail, Regional Lock-Up & House of Correction - DUKES COUNTY SHERIFF'S OFFICE, holds everyone kept in custody after an arrest in Dukes County, from every agency.
SearchSystems opened and checked the jail page of the Jail, Regional Lock-Up & House of Correction - DUKES COUNTY SHERIFF'S OFFICE at dukescountysheriff.com/jail-house-of-corrections (page title: Jail, Regional Lock-Up & House of Correction | DUKES COUNTY SHERIFF'S OFFICE), which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster.
The Dukes County Jail by the Numbers
On an average day in 2025 the jail held about 15 people, down from about 18 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 40 beds, and it ran at 45 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Dukes County has about 21,000 residents (2024 Census Bureau estimate), so the jail holds about 7 people for every 10,000 residents.
Who Books People Into the Dukes County Jail
The Jail, Regional Lock-Up & House of Correction - DUKES COUNTY SHERIFF'S OFFICE makes the arrests that end in a booking in Dukes County.
The FBI's agency list also places one more agency in Dukes County: the Dukes County State Police (state police).
The largest arrest counts reported to the FBI were Oak Bluffs's 194 for 2025, Edgartown's 110 for 2024 and Tisbury's 106 for 2025.
Together, the five agencies in Dukes County with all twelve months of 2025 on file reported 355 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Dukes County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Dukes County serves the sentence in a facility of the Massachusetts Department of Correction, whose inmate locator is at mass.gov/how-to/find-someone-housed-in-a-massachusetts-prison.
Frequently Asked Questions
How do I find an inmate in Dukes County?
Ask the Jail, Regional Lock-Up & House of Correction - DUKES COUNTY SHERIFF'S OFFICE; its jail page SearchSystems verified is at dukescountysheriff.com.
How many people are in the Dukes County jail?
About 15 on an average day in 2025, the latest year in the Vera Institute's jail data, against a rated capacity of 40 beds.
Where do people sentenced to prison in Dukes County go?
To a facility of the Massachusetts Department of Correction; its inmate locator is at mass.gov.
Is this the official Dukes County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.